Hi Parnasus,
HP J9850A Switch 5406Rzl2
Software revision KB.16.05.0004
Deployed 2 units of similar models and firmware.
Ironically both are showing similar symptoms, both devices are up and running.
display poe-power alarm
PSU alarm detail, PSU number : 2
PSU 1 alarm : AUX FAILED
PSU 2 alarm : AUX FAILED
display poe-power switch state
Switch Number : 2
Switch 1 state : AUX FAULT
Switch 2 state : AUX FAULT